Manifolding ob duplicating paper



c. L. SPENCE.

'MANIFOLDIBIG 0R DUPLICATING PAPER.

' APPLICATION FILED JULY 3, i915 1,306,785. Patented J 11116 17, 1919.

[NYENZ'OE AT KS'. I

m: unnms PEIERS 00.. Fnumurna. wAsmNcmm 0. c.

CHARLES L. SPENCE, or s'rnners, MICHIGAN.

MAmroLnING on nUrLIoATIive PAPER.

- To all whom it may concern: a

Be it known that I, CHARLES L. SPENCE, a citizen of the United States, residing at Sturgis, in the county of St. Joseph and State of Michigan, have invented a certain new and useful Improvement in Manifolding or Duplicating Paper, of which-the following is a full, clear, and exact description,

reference being had to the accompanying drawings. i

This invention relates to particularly adapted for use in the making of duplicate 1 records through the use of transfer material whereby the writing on an original sheet will be reproduced upon a second sheet. A large field for the use of such paper is the production of triplicate sales books wherein an original and two copies of an entry may be made by one and the same writing operation. The particular paper, such asis paper to which this invention relates is a double sheet, one section whereof is ordinary paper which is adapted to be printedupon and to be written upon directly by pencil or typewriter, the other section being permeable whereby the transfer material taken upon the back or under side'thereof from a sheet of such material when the originalsheet is written upon by a pen, pencil, or typewriter, will'strike through such second sectionto the front face thereof, whereby it will be clearly legible on the front of this second or duplicate section. For the purpose of making a third copy of the writing, an additional sheet of'paper may be placed beneath the duplicate sheet, with a leaf of full? carbon or 2 transfer paper interposed between the second section and the third sheet, whereby the pressure created in writing upon the first section will cause a transfer from the full carbon sheet to be made upon the back of the second section. and upon the front or .up-

per surface of the third sheet or section;

clean and remain clean in operation; which.

) p Specificationofletters Patent Pafentd he 17, 11919, Application filed my 3, 1915. Serial No. 37,819.

will retain its permeable qualities perma nently; which will be capable of and well adapted for receiving printing thereon; which will be firm and remain firm; and which will secure a permanent record of the matter transferred thereto. Further and more limited objects will appear hereinafter.

In the drawings forming part hereof, Figure 1 shows a perspective view of a double 'Describing by reference characters the va- 1 rious parts illustrated herein, 1 denotes the original and 2 the duplicate leaf, said leaves being preferably divided by a perforated line 3 and the duplicate leaf being provided With a stub 4 to which it may be detachably connected through a perforated line 5. For convenience of manipulation, the original leaf may be somewhat shorter than the duplicate leaf, whereby some'clearance may be provided between the severing line 5 and the adjacent or upper end of the original. 7 indicates a triplicate sheet which may be placed beneath. the double sheet just described: and. which is secured at one end. The alternating stubs projecting from the duplicate and triplicate sheets may be conveniently stitched or stapled to a back. 9, this back being provided with an extension forming a cover 10, which may bea sidefolding cover connected to an intermediate side portion 11 projecting fromfthe back. Secured to the lower end of the back 9 is a carbon or transfer sheet 12,'which is coated on both sides with transfer material, aspencil carbon, and which is known to the trade as full, carbon. It is evident that this transfer sheet 12 may be secured tothe bottom of the pad in any other desired or convenient manner; also that it may, infcer: tain cases, be'securcd to the side of the pact For convenience of manipulation, eitherpr both. corners of the carbon sheet 12 mayfbe.

cut away, as indicated at 13, and each triplicate sheet may be provided with a notch 1 1 in the corresponding corner.

As previously stated, the duplicate leaf or section 2 of the double sheet is permeable,

whereby material transferred to the under or back surface thereof will strike through posed to make aduplicateleaf wherein one section is transparent iii-order that writing or transfer material which is applied to the back or under surface thereof may be legible from .the front or top surface. I am also aware of the fact thatit has been proposed, in order to secure this result, to use tissue paper for the duplicate sheet. This paper, however, is obviously objectionable because of its lack of body and because its use renders necessary the use of like material for the original or upper sheet or else necessitates fastening together two separate sheets of different kinds of paper. I am also aware of the fact that it has been proposed to make a duplicate sheet of the same kind of paper as the original sheet and to render the duplicate sheet transparent or translucent by means of oil. ,Such paper, however, is open to the serious objection that it is practically impossible to prevent the oil from soiling the adjacent sheets and the hands of the operator; also that the oil, being liquidat ordinary atmospheric temperatures, will be gradually removed from the duplicate sheet, and especially where this sheet happens to come in contact with any thing of an absorbent nature, so that the sheet loses its transl ucency or transparency. A further objection to the use of such liquids as oils for the production of a transparent or translucent sheet is that it renders the paper practically useless for printing purposes, as for duplicating thereon the headings or other data which are applied to the original sheet; also the saturation of the duplicate sheet with a. liquid renders itsoft and o bjection'aibly pliable. a

In order to produce a paper which is free from the objections noted, 1 coat and saturate the paper from which the duplicate sheets are to .be made with a substance which is solid at normal atmospheric temperatures and which is capable of rendering the paper permeable. As at present advised,-I prefer to use stearic acid for this purpose, pre-- liminarily heating thesame to place itin a molten liquid condition and applying this liquid stearic acid'to the paper. This may be done by a machine such as is used for the purpose of waxing paper to render it waterproof, such machine being of the Wellknown type wherein the material to be applied wto the paper (in "this case, stearic acid) is contained within a steam-heated trough, there beiiiga rollerrevolving in this trough: The pap'er is led overuse roller, which revolves 1n the trough, dipping into the molten -stearic acid therein, and thus supplies the liquid coating material to the paper," the surplus material is removed by means of a scraper conveniently placed and contacting with the coated side of thepaper,

and the coating is set or hardened by drawing the paper over chilled rolls. The molten stearic acid, contacting with the paper,

shown herein, the operator writes the same I upon the original sheet 1, thereby simultaneously making the same record upon the duplicate and triplicate sheets, the record on the duplicate being made upon the under or reverse side thereof and by means of the transfer material on the upper surfaceof the transfer sheet while the record on the triplicate sheet is made in the ordinary man nor, by transfer from the lower of the transfer sheets upon the upper surface of-the triplicate sheet. The record which is made upon the under or reverse side of. the duplicate sheet will be clearly legible upon the upper or front side because of the striking through of the transfer material from the under. or reverseside of such sheet to. the upper or front side thereof. I The operator, after making his entries, can tear off the originaland duplicate sheets from the stub 4. Then, inserting his thumb into the notch- 14, he can conveniently grasp the-original sheet 1 beneath the carbon sheet and, by pulling downwardly upon the original sheet and moving it upwardly in the manner shown in Figs. 2 and 3, canthrow the used triplicate sheet 7 back out of the way in-the manner shown in Fig. 3. This enables the carbon sheet to be conveniently inserted above, and in fact to drop upon, the next unusedtriplicatesheet, and the leaf comprising the urn used-original and duplicate sheets will auto matically drop upon the carbon sheet, ready for. the next operation. a V

While I have illustrated and described one particular use for paper constructed in accordance with my invention, it will be un-. derstood. that I do not propose thereby to be limited to such "use, as it will beevident that other and more important fields of uses fulness will be? developed therefor. For in stance,-the' paper is well adapted for usewith a typewriter wherein transfer material 1 is carried by the platen as, for instance, in the patent to Farmer, No. 878,717, issued Feb. 11, 1908.

Having thus described my invention, what I claim is 1. An integral sheet of paper comprising two sections, one of said sections being impermeable and the other section being permeable to transfer material whereby transfer material taken upon or applied to one side of such section will permeate the latter section and become visible from the other side.

2. A sheet of paper comprising two sections divided by a severing line, one of said sections being impermeable and the other section being permeable to transfer material whereby transfer material taken upon or applied to one side of the latter section will permeate such section and become visible from the other side.

3. An integral sheet of paper comprising two sections divided by a severing line, one of said sections being ordinary paper and the other section having incorporated therewith an ingredient which renders it permeable to transfer material applied to either side thereof.

4:. An integral sheet of paper comprising two sections divided by a line of perfora tions, one of said sections being ordinary paper and the other section having incorporated therewith an ingredient which is substantially solid at ordinary atmospheric temperatures but is incorporated into said latter section in a molten condition and which renders the section permeable to transfer material applied to either side thereof.

5. A manifold tablet comprising a plurality of double sheets, each sheet being divided by a weakened line into-upper and under sections, the latter section of each sheet being permeable to transfer material, another sheet beneath the double sheet, and a carbon sheet coated on both sides interposed between the under section of the double sheet and the said additional sheet.

6. A manifold tablet containing a plurality of sets of leaves each set comprising a pair of leaves, one of the sheets of said pair being ordinary paper which is adapted to receive written or printed matter directly thereupon and the other of said leaves having incorporated therewith an ingredient which renders it permeable to transfer material applied to either side thereof.

7. A manifold tablet containing a leaf of ordinary paper adapted to receive written or printed matter directly thereupon, a second leaf beneath said first named leaf having incorporated therewith an ingredient which renders it permeable to transfer material applied to either side thereof, and a carbon sheet coated upon its upper side and positioned directly beneath said second leaf.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

CHARLES L. SPENCE. lVitnesses THOS. J. COLLINS, M. E. AULsBRooK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

